Question

What is the proper order for oxidation of a free fatty acid?

a) Activation, Beta-oxidation, Electron Transport Chain
b) Electron Transport Chain, Activation, Beta-oxidation
c) Beta-oxidation, Electron Transport Chain, Activation
d) Activation, Electron Transport Chain, Beta-oxidation

Answer 1

The proper order for the oxidation of a free fatty acid is beta-oxidation, Electron Transport Chain, Activation.

Step-by-step explanation:

The proper order for the oxidation of a free fatty acid is c) Beta-oxidation, Electron Transport Chain, Activation.

First, the free fatty acid undergoes beta-oxidation, which is a four-step cycle that removes carbons from the fatty acid two at a time to form acetyl-CoA. Then, the acetyl-CoA enters the Electron Transport Chain, which produces ATP. Lastly, the fatty acid is activated by conversion to a fatty acyl-CoA derivative of coenzyme A.